feat(ai): add Atlas Cloud provider support

[binyangzhu000-sudo]

Summary

• add an AI_PROVIDER adapter while keeping Gemini as the default
• support Atlas Cloud through its OpenAI-compatible chat completions endpoint
• validate Atlas JSON responses with the existing FunctionCallResponse schema
• add Atlas API key, base URL, and model configuration to .env.example
• cover Gemini default behavior, Atlas JSON requests, and invalid providers with focused tests

Configuration

AI_PROVIDER=atlascloud
ATLASCLOUD_API_KEY=your_api_key
ATLASCLOUD_BASE_URL=https://api.atlascloud.ai/v1
ATLASCLOUD_MODEL=deepseek-ai/deepseek-v4-pro

ATLAS_CLOUD_* aliases are also accepted for compatibility.

Validation

• uv run ruff format --check ai/provider.py ai/routes.py tests/test_ai_provider.py
• uv run ruff check ai/provider.py ai/routes.py tests/test_ai_provider.py
• uv run python -m unittest discover -s tests -p "test_*.py" -v (3 passed)
• uv run mypy .
• focused repository pre-commit hooks
• git diff --check
• live Atlas Cloud deepseek-ai/deepseek-v4-pro chat completion: HTTP 200; JSON output passed FunctionCallResponse validation

No README, logo, sponsor, credits, or partner changes.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 16 complexity · 0 duplication

Metric	Results
Complexity	16
Duplication	0

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